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$\begingroup$The N-back task used in Muehlhan et al. (2014) you cite is a working memory task, which is 'cognitive function' as you ask for at the end of your question. But, from the rest of your question I understand you are interested in the impact of different body postures on higher-level decision making.$\endgroup$
– Steven Jeuris♦Sep 4 '19 at 13:35

$\begingroup$That's not what I said... I am implying (and maybe should have made it explicit) that your question is not "Can you offer examples of studies of cognitive function vs. body position." If it is, you are answering it yourself by linking to Muehlhan et al. (2014).$\endgroup$
– Steven Jeuris♦Sep 5 '19 at 7:07